Further evidence for room temperature, indentation-induced nanocrystallization in a bulk metallic glass

Yoo, Byung-Gil and Choi, In-Chul and Kim, Yong-Jae and Suh, Jin-Yoo and Ramamurty, Upadrasta and Jang, Jae-il (2012) Further evidence for room temperature, indentation-induced nanocrystallization in a bulk metallic glass. In: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 545 . pp. 225-228.

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Abstract

Room temperature nanoindentation experiments, employing two different pyramidal (Berkovich and cube-corner) indenters, were performed on a Zr-based bulk metallic glass (BMG) to critically examine the possibility of indentation-induced nanocrystallization in BMGs. Cross-sectional transmission electron microscopy images obtained from high angle annular dark field ( HAADF) and high resolution (HR) modes clearly indicate to the occurrence of nanocrystallization. Pronounced nanocrystallite formation in the case of sharper cube-corner indenter suggests that the structural transformation is favored by the high strains introduced during nanoindentation. (c) 2012 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Publisher:	Science Direct
Additional Information:	Copy right for this article belongs to Elsevier B V
Keywords:	AMORPHOUS-ALLOYS;INDENTER ANGLE;BEHAVIOR;NANOINDENTATION; CRYSTALLIZATION
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	20 Jul 2012 09:22
Last Modified:	20 Jul 2012 09:22
URI:	http://eprints.iisc.ac.in/id/eprint/44650

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